Capture of seasonal variability of temperature and its spatial distribution using Argo floats data

Shigeki Hosoda, Shinya Minato, Nobuyuki Shikama
IORGC/JAMSTEC,
2-15, Natshushima-cho, Yokosuka, Kanagawa, 237-0061,Japan
e-mail:hosodas@jamstec.go.jp

We can capture seasonal temperature variation in the mid-depth ocean in Argo profile data themselves and in the monthly temperature mapping of the OI with Argo floats, shipboard CTD and the TRITON buoy data. In some profiles of Argo floats, the signal like seasonal variation can be seen in the mid depth (from below the thermocline to 2000db). Further investigation of its characteristics shows that it corresponds well with the signal in the surface layer. Correlation analyses show the same results.